The Hypolimnus Pedderensis is a Lake Pedder Earthworm. It lived in Tasmania Australia but went extinct in 1971. (Lake Pedder Earthworm). It only lived in a sandy, waterlogged habitat. Also, it fertilized soil as a niche. It was a segmented earthworm that has 129 body segments, was 50mm in length and 1.6mm in diameter. (Australia). Due to a flood at Lake Pedder, this earthworm is now extinct.
In 1972, Lake Pedder flooded because of a hydro-electric power scheme. This flood is the main reason the Lake Pedder Earthworm went extinct. This earthworm has only been found in Tasmania Australia. The survey to check if the species was still alive failed in 1996. (Lake Pedder Earthworm). This is the reason the Lake Pedder